How many clairvoyants would be needed before being certain that one of them would correctly predict the future of the World Series?Suppose the World Series is about to begin. Some clairvoyants get...

How many clairvoyants would be needed before being certain that one of them would correctly predict the future of the World Series?

Suppose the World Series is about to begin. Some clairvoyants get together and decide to each predict different win-loss patterns for the seven possible games during the coming series. That is, one might predict that the first team will winn the first three games, then lose two, then win the next. How many clairvoyants would be needed before being certain that one of them would correctly predict the future of the World Series?